Bung-withdrawing machine.



A. M. MUNZINGBR.

BUNG WITHDRAWING MACHINE.

APPLICATION FILED DEO. 22, 1908.

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Patented`pr. l, 1913.

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`-To all whom t may concern: f'

ll, ALBERT Ml Munzin- GER, residing at Williamsport, in the county ofLycoming and State of Pennsylvania,

Be it known that.

vhave invented certain new and useful .lfm-

provements in Bung-Withdrawing Maf chines, of which the following is aspecifica-l tion.

ll/lty invention relates to a bung withdrawing machine, vision of acompact and eH'ect-ive machine for the purpose stated, which cutsthrough the bung progressively and removes it ina single operation.Bungs are ordinarily made of soft -poplar wood highly compressed so thatthey expand after have been tightly driven into the bung""hole. rll`heirremoval is therefore 'diiiicult Usually they are chipped out bit by bit,a tedious operation which also has the disadvantage that pieces of t-hebung may fall through the bung hole. v

My machine has aslicing action and makes a helical cut through the bungwhile it is still in place, and then in the same' operation by furtherrotation. removes it, the bung, as it is raised out of the hole,ordinarily breaking and falling from the tool, dislodged from the toolby the next bung removed. This dis integration is the result of thecutting into the bung and of the displacement of the material of thebung and its consequent weakening and further compression while it isstill in position by the tool which is relatively large with referenceto the bung. the removal of the bung is the action obviously to beexpected when the bung is no longer held together by the portion of thebarrel surrounding it.

My invention consists in a bung extractor of the general natureillustrated in the drawings described in the specification, and moreparticularly pointed out in t-he appended claims.

Referring to the drawings: Figure 1. is an elevation of my machine partsbeing shown in section. Fig. 2. is a side elevation, the tool beingshown in a position slightly different from that illustrated in Fig. 1.Fig.

3. is a plan view vof the device. Fig. 4. isa l side elevation of amodification in which a motor together with reducing gearing is mountedon the tool support.

1 isa shaft which in the preferred form is iexible and iS of anysuitable structure.

Specification of Letters Patent slanted ends.

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Application filed December 22, 1908. Serial to. 68,801.

This .shaft is provided with a metal casing 2 on the end of which isscrew threaded a supv port having legs 3, preferably three in number,which during the operation of the machine are designed to be drawn downupon the port-ion of the barrel adjacent the bung hole and for thatpurpose have beveled or 'llhe legs 3- are located symthe axis of thesupport metrically about tool about to be which is also the axis of thedescribed.

The shaft l is provided with a rotatable spindle l having ascrew-threaded end onto which is adapted to be screwed tool 7. rll`histool may of course be secured in any other suitable manner. lits upperend is close up against the metal casing 2 preventing upwardmotion ofthe tool with respect to the support. Downward motion is prevented bythenut or collar 8 screwed onto the met-al casing '2 above the over thesame.

rlhe tool 7 is in the nature of an auger land is provided, with astarting screw 9 or other centering means atl itslower end and with a'cutting up and removing helix 10 immediately above the starting screw.It does not, however,v merely bore a hole through the bung but, asstated, slices through it, the blade at the lower end of the helix lyingin a plane intersecting at a sharp angle a plane at right angles to theaxis of the helix adjacent said cutting blade. rll`he parts slicedthrough are not in that operation removed but the entire bungdisintegrates when it has been removed from the bung hole. rllheexterior of the helix, as shown, is non-cutting. rlhis helix forease ofoperation, is' preferably of uniform internal and external diameter,that is, the auger, if solid would form a cylinder and, if the thread ofthe auger were removed, would likewisev form while this is the preferredconstruction, it is not to be inferred that no other arrangement wouldbe operative. Irlhe helix 10, as will shortly appear hereinafter, is inthe nature of a slicer by reason of the construction of its lower end.lt is of low pitch and of considerable di# ameter extending well outtoward the edge of the bung. rll-he blade at the lower end of thehelixextends well out from the axis of the helix toward the edge of the bungand is so located as to intersect at a shar angle a plane at rightangles tothe axis support and projecting of the helix' adjacent saidcutting blade. The cutting blade thus enters the bung at a sharp angleto its surface and with a slicing action.

The legs 3 are of such length that the starting i screw and auger havepassed through the bung just before the ends ofthe legs rest upon thesurface of the barrel. Once this relative position is reached furtherrotation of the tool raises the bung out of the hole and, as abovestated, the bung will ordinarily ex and and break up so that it willfall in pieces from the tool automatically. However, should this actionfail to occur, the bung will be forced off when the next bung isremoved.

Many bungs are made with the grain of the wood running substantiallyhorizontal, and to such bungs my machine is peculiarly applicable, sinceit acts substantially with the grain. After the starting screw hasentered the bung, the sharp cutting edge at the lower end of the augeris forced into the top of the bung and the rotation of the tool feeds itthrough the bung, cutting a helical path so that the machineprogressively cuts through the bung while still in place and thenremoves it in a single operation. The machine may obviously be driven byhand or by power. In Fig. 4 I have shown a compact form' of the devicein which a motor 12 is mounted co-axially with the tool and above itbeing supported by the legs 3. This motor may be of any desired natureelectrical or otherwise. Between the mot-or and the tool is a casing 13,containing reducing gearing 14 operatively connecting the motor with thetool.

It will beA apparent that by this device bungs may be removed.completely and eX- peditiously, and by a single operation.

What I claim as my invention is- 1. A bung withdrawing machine comprisiing a support, and slicing means rotatably mounted in said' support andprovided with a helix having a non-cutting exterior and a slicing bladelying in .a plane intersecting at a sharp `angle a plane at right anglesto the axis of thehelix adjacent said' cutting blade.

' 2. A bung withdrawing machine comprising a shaft, a support carried bysaid shaft y adjacent its end, and adapted to be drawn down upon thebarrel in the' operation of the machine, and a slicing tool on the endof said shaft provided with centering means and with a helix of lowpitch and of much j greater diameter than said centering means andhaving a transverse slicing edge extending well out from the axis ofsaid helix and located 1n a plane intersecting at a sharp angle a planeat right angles to the axis of a slicing device above the same havingat4 its lower end a slicing blade extending well out from the axis ofthe helix and lying in a plane intersecting at a sharp angle a plane atright angles to the axis of the helix adjacent said cutting blade.

Signed by Ine lthis 17th day of December,

ALBERT M. MUNZINGER. Witnesses:

Trios. H. HAMMOND, EVA LEHMAN.

